[ntp:questions] Clock time synchronization of four computers

Nazmul Islam nazmul.islam at gmail.com
Sun Jul 8 19:24:41 UTC 2012


>
> Hello,
>
> I have not used ntp processing before. I apologize in advance if my
> questions seem too novice.
>
> I am trying to synchronize the clocks of four computers. The timing does
> not have to be accurate but they have to be sync'd with each other.  An
> error tolerance of 10-20 ms is acceptable. The computers are connected to
> the servers.
>
> I installed ntp by typing 'sudo apt-get install ntp' in the terminal. When
> I typed "sudo ntpq -c lpeer", each computer was found to be connected to
> different timing websites.

   Therefore, I modified the ntp.conf server list and put the following
ones for each of them (I am at NJ, USA):

server nist1-ny.ustiming.org
server nist1-nj.ustiming.org
server ntp.ubuntu.com


> However, each computer is still off. It's hard to find the exact time
> difference from eye-balling but I can see a clock time difference of
> roughly 1-2 second.
>
> What should I do to synchronize these computers?
>
> Thanks,
>
> Nazmul




Muhammad Nazmul Islam
PhD student
WINLAB, Rutgers University, USA


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